136032-94-5Relevant articles and documents
Enantioselective Synthesis of α-Quaternary Amino Acids by Alkylation of Deprotonated α-Aminonitriles
Netz, Isabelle,Kucukdisli, Murat,Opatz, Till
, p. 6864 - 6869 (2015)
A series of α-quaternary arylglycines were prepared in high optical purity (up to 98% ee) by α-alkylation of deprotonated α-aminonitriles derived by the Strecker reaction from (4S,5S)-5-amino-2,2-dimethyl-4-phenyl-1,3-dioxane. The procedure includes only chromatographic purification of the final products and is devoid of chromatography or crystallization operations on intermediates to raise the optical purity.
REACTIONS OF FLUOROBENZENE TRICARBONYLCHROMIUM COMPLEXES WITH ANIONS FROM SCHIFF BASES OF α-AMINO ESTERS; ENANTIOSELECTIVE SYNTHESIS OF α-ARYL AMINO ACIDS
Chaari, Mohamed,Jenhi, Aicha,Lavergne, Jean-Pierre,Viallefont, Philippe
, p. 4619 - 4630 (2007/10/02)
We report here a convenient synthesis of α-substituted aryl amino acids via the addition of α-imino esters to fluorobenzene tricarbonylchromium complexes.Optically pure α-aryl amino acids have been prepared by enantioselective substitution of fluorobenzene complexes using Schiff bases of L-alanine, leucine and valine methyl esters and (1R,2R,5R)-2-hydroxypinan-3-one.